Finding the Third Proportional to 62,770.50 and 89,491.50

Step by Step Solution

1. Step 1: Write the proportion equation
   62,770.50 : 89,491.50 = 89,491.50 : x
2. Step 2: Convert to fraction form
   62,770.50/89,491.50 = 89,491.50/x
3. Step 3: Cross multiply
   62,770.50x = 89,491.50 × 89,491.50
4. Step 4: Simplify right side
   62,770.50x = 8,008,728,572.25
5. Step 5: Solve for x
   x = 8,008,728,572.25/62,770.50
6. Step 6: Final answer
   x = 127,587.46