Finding the Third Proportional to 5,419,963,127.25 and 8,285,725,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,419,963,127.25 : 8,285,725,111.50 = 8,285,725,111.50 : x
2. Step 2: Convert to fraction form
   5,419,963,127.25/8,285,725,111.50 = 8,285,725,111.50/x
3. Step 3: Cross multiply
   5,419,963,127.25x = 8,285,725,111.50 × 8,285,725,111.50
4. Step 4: Simplify right side
   5,419,963,127.25x = 68,653,240,623,341,690,880
5. Step 5: Solve for x
   x = 68,653,240,623,341,690,880/5,419,963,127.25
6. Step 6: Final answer
   x = 12,666,735,734.45