Finding the Third Proportional to 61,939.50 and 86,184.75

Step by Step Solution

1. Step 1: Write the proportion equation
   61,939.50 : 86,184.75 = 86,184.75 : x
2. Step 2: Convert to fraction form
   61,939.50/86,184.75 = 86,184.75/x
3. Step 3: Cross multiply
   61,939.50x = 86,184.75 × 86,184.75
4. Step 4: Simplify right side
   61,939.50x = 7,427,811,132.56
5. Step 5: Solve for x
   x = 7,427,811,132.56/61,939.50
6. Step 6: Final answer
   x = 119,920.42