Finding the Third Proportional to 77,279.50 and 162,861.50

Step by Step Solution

1. Step 1: Write the proportion equation
   77,279.50 : 162,861.50 = 162,861.50 : x
2. Step 2: Convert to fraction form
   77,279.50/162,861.50 = 162,861.50/x
3. Step 3: Cross multiply
   77,279.50x = 162,861.50 × 162,861.50
4. Step 4: Simplify right side
   77,279.50x = 26,523,868,182.25
5. Step 5: Solve for x
   x = 26,523,868,182.25/77,279.50
6. Step 6: Final answer
   x = 343,219.98