Finding the Third Proportional to 67,992,691.50 and 145,686,949.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,992,691.50 : 145,686,949.50 = 145,686,949.50 : x
2. Step 2: Convert to fraction form
   67,992,691.50/145,686,949.50 = 145,686,949.50/x
3. Step 3: Cross multiply
   67,992,691.50x = 145,686,949.50 × 145,686,949.50
4. Step 4: Simplify right side
   67,992,691.50x = 21,224,687,254,615,552
5. Step 5: Solve for x
   x = 21,224,687,254,615,552/67,992,691.50
6. Step 6: Final answer
   x = 312,161,304.20