Finding the Third Proportional to 60,690 and 129,034.50

Step by Step Solution

1. Step 1: Write the proportion equation
   60,690 : 129,034.50 = 129,034.50 : x
2. Step 2: Convert to fraction form
   60,690/129,034.50 = 129,034.50/x
3. Step 3: Cross multiply
   60,690x = 129,034.50 × 129,034.50
4. Step 4: Simplify right side
   60,690x = 16,649,902,190.25
5. Step 5: Solve for x
   x = 16,649,902,190.25/60,690
6. Step 6: Final answer
   x = 274,343.42