Finding the Third Proportional to 162,976.50 and 252,139.50

Step by Step Solution

1. Step 1: Write the proportion equation
   162,976.50 : 252,139.50 = 252,139.50 : x
2. Step 2: Convert to fraction form
   162,976.50/252,139.50 = 252,139.50/x
3. Step 3: Cross multiply
   162,976.50x = 252,139.50 × 252,139.50
4. Step 4: Simplify right side
   162,976.50x = 63,574,327,460.25
5. Step 5: Solve for x
   x = 63,574,327,460.25/162,976.50
6. Step 6: Final answer
   x = 390,082.79