Finding the Third Proportional to 31,437 and 66,505.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,437 : 66,505.50 = 66,505.50 : x
2. Step 2: Convert to fraction form
   31,437/66,505.50 = 66,505.50/x
3. Step 3: Cross multiply
   31,437x = 66,505.50 × 66,505.50
4. Step 4: Simplify right side
   31,437x = 4,422,981,530.25
5. Step 5: Solve for x
   x = 4,422,981,530.25/31,437
6. Step 6: Final answer
   x = 140,693.50