Finding the Third Proportional to 52,748 and 80,690

Step by Step Solution

1. Step 1: Write the proportion equation
   52,748 : 80,690 = 80,690 : x
2. Step 2: Convert to fraction form
   52,748/80,690 = 80,690/x
3. Step 3: Cross multiply
   52,748x = 80,690 × 80,690
4. Step 4: Simplify right side
   52,748x = 6,510,876,100
5. Step 5: Solve for x
   x = 6,510,876,100/52,748
6. Step 6: Final answer
   x = 123,433.61