Finding the Third Proportional to 540,915,388 and 808,188,870

Step by Step Solution

1. Step 1: Write the proportion equation
   540,915,388 : 808,188,870 = 808,188,870 : x
2. Step 2: Convert to fraction form
   540,915,388/808,188,870 = 808,188,870/x
3. Step 3: Cross multiply
   540,915,388x = 808,188,870 × 808,188,870
4. Step 4: Simplify right side
   540,915,388x = 653,169,249,591,876,864
5. Step 5: Solve for x
   x = 653,169,249,591,876,864/540,915,388
6. Step 6: Final answer
   x = 1,207,525,731.53