Finding the Third Proportional to 142,479 and 211,522.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,479 : 211,522.50 = 211,522.50 : x
2. Step 2: Convert to fraction form
   142,479/211,522.50 = 211,522.50/x
3. Step 3: Cross multiply
   142,479x = 211,522.50 × 211,522.50
4. Step 4: Simplify right side
   142,479x = 44,741,768,006.25
5. Step 5: Solve for x
   x = 44,741,768,006.25/142,479
6. Step 6: Final answer
   x = 314,023.60