Finding the Third Proportional to 62,860.50 and 85,421.25

Step by Step Solution

1. Step 1: Write the proportion equation
   62,860.50 : 85,421.25 = 85,421.25 : x
2. Step 2: Convert to fraction form
   62,860.50/85,421.25 = 85,421.25/x
3. Step 3: Cross multiply
   62,860.50x = 85,421.25 × 85,421.25
4. Step 4: Simplify right side
   62,860.50x = 7,296,789,951.56
5. Step 5: Solve for x
   x = 7,296,789,951.56/62,860.50
6. Step 6: Final answer
   x = 116,079.10