Finding the Third Proportional to 129,904.50 and 206,862

Step by Step Solution

1. Step 1: Write the proportion equation
   129,904.50 : 206,862 = 206,862 : x
2. Step 2: Convert to fraction form
   129,904.50/206,862 = 206,862/x
3. Step 3: Cross multiply
   129,904.50x = 206,862 × 206,862
4. Step 4: Simplify right side
   129,904.50x = 42,791,887,044
5. Step 5: Solve for x
   x = 42,791,887,044/129,904.50
6. Step 6: Final answer
   x = 329,410.35