Finding the Third Proportional to 131,926 and 288,840

Step by Step Solution

1. Step 1: Write the proportion equation
   131,926 : 288,840 = 288,840 : x
2. Step 2: Convert to fraction form
   131,926/288,840 = 288,840/x
3. Step 3: Cross multiply
   131,926x = 288,840 × 288,840
4. Step 4: Simplify right side
   131,926x = 83,428,545,600
5. Step 5: Solve for x
   x = 83,428,545,600/131,926
6. Step 6: Final answer
   x = 632,388.96