Finding the Third Proportional to 62,734.50 and 89,430

Step by Step Solution

1. Step 1: Write the proportion equation
   62,734.50 : 89,430 = 89,430 : x
2. Step 2: Convert to fraction form
   62,734.50/89,430 = 89,430/x
3. Step 3: Cross multiply
   62,734.50x = 89,430 × 89,430
4. Step 4: Simplify right side
   62,734.50x = 7,997,724,900
5. Step 5: Solve for x
   x = 7,997,724,900/62,734.50
6. Step 6: Final answer
   x = 127,485.27