Finding the Third Proportional to 65,215,490 and 140,645,398

Step by Step Solution

1. Step 1: Write the proportion equation
   65,215,490 : 140,645,398 = 140,645,398 : x
2. Step 2: Convert to fraction form
   65,215,490/140,645,398 = 140,645,398/x
3. Step 3: Cross multiply
   65,215,490x = 140,645,398 × 140,645,398
4. Step 4: Simplify right side
   65,215,490x = 19,781,127,978,578,404
5. Step 5: Solve for x
   x = 19,781,127,978,578,404/65,215,490
6. Step 6: Final answer
   x = 303,319,471.78