Finding the Third Proportional to 6,466,128 and 10,143,400.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,466,128 : 10,143,400.50 = 10,143,400.50 : x
2. Step 2: Convert to fraction form
   6,466,128/10,143,400.50 = 10,143,400.50/x
3. Step 3: Cross multiply
   6,466,128x = 10,143,400.50 × 10,143,400.50
4. Step 4: Simplify right side
   6,466,128x = 102,888,573,703,400.25
5. Step 5: Solve for x
   x = 102,888,573,703,400.25/6,466,128
6. Step 6: Final answer
   x = 15,911,929.63