Finding the Third Proportional to 61,507.50 and 91,939.88

Step by Step Solution

1. Step 1: Write the proportion equation
   61,507.50 : 91,939.88 = 91,939.88 : x
2. Step 2: Convert to fraction form
   61,507.50/91,939.88 = 91,939.88/x
3. Step 3: Cross multiply
   61,507.50x = 91,939.88 × 91,939.88
4. Step 4: Simplify right side
   61,507.50x = 8,452,940,615.02
5. Step 5: Solve for x
   x = 8,452,940,615.02/61,507.50
6. Step 6: Final answer
   x = 137,429.43