Finding the Third Proportional to 31,566.38 and 70,139.53

Step by Step Solution

1. Step 1: Write the proportion equation
   31,566.38 : 70,139.53 = 70,139.53 : x
2. Step 2: Convert to fraction form
   31,566.38/70,139.53 = 70,139.53/x
3. Step 3: Cross multiply
   31,566.38x = 70,139.53 × 70,139.53
4. Step 4: Simplify right side
   31,566.38x = 4,919,553,843.97
5. Step 5: Solve for x
   x = 4,919,553,843.97/31,566.38
6. Step 6: Final answer
   x = 155,847.92