Finding the Third Proportional to 52,900 and 71,810

Step by Step Solution

1. Step 1: Write the proportion equation
   52,900 : 71,810 = 71,810 : x
2. Step 2: Convert to fraction form
   52,900/71,810 = 71,810/x
3. Step 3: Cross multiply
   52,900x = 71,810 × 71,810
4. Step 4: Simplify right side
   52,900x = 5,156,676,100
5. Step 5: Solve for x
   x = 5,156,676,100/52,900
6. Step 6: Final answer
   x = 97,479.70