Finding the Third Proportional to 142,425 and 220,522.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,425 : 220,522.50 = 220,522.50 : x
2. Step 2: Convert to fraction form
   142,425/220,522.50 = 220,522.50/x
3. Step 3: Cross multiply
   142,425x = 220,522.50 × 220,522.50
4. Step 4: Simplify right side
   142,425x = 48,630,173,006.25
5. Step 5: Solve for x
   x = 48,630,173,006.25/142,425
6. Step 6: Final answer
   x = 341,444.08