Finding the Third Proportional to 139,505,769 and 300,335,323.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,505,769 : 300,335,323.50 = 300,335,323.50 : x
2. Step 2: Convert to fraction form
   139,505,769/300,335,323.50 = 300,335,323.50/x
3. Step 3: Cross multiply
   139,505,769x = 300,335,323.50 × 300,335,323.50
4. Step 4: Simplify right side
   139,505,769x = 90,201,306,541,849,648
5. Step 5: Solve for x
   x = 90,201,306,541,849,648/139,505,769
6. Step 6: Final answer
   x = 646,577,608.86