Finding the Third Proportional to 60,912 and 91,672

Step by Step Solution

1. Step 1: Write the proportion equation
   60,912 : 91,672 = 91,672 : x
2. Step 2: Convert to fraction form
   60,912/91,672 = 91,672/x
3. Step 3: Cross multiply
   60,912x = 91,672 × 91,672
4. Step 4: Simplify right side
   60,912x = 8,403,755,584
5. Step 5: Solve for x
   x = 8,403,755,584/60,912
6. Step 6: Final answer
   x = 137,965.52