Finding the Third Proportional to 142,617 and 250,240.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,617 : 250,240.50 = 250,240.50 : x
2. Step 2: Convert to fraction form
   142,617/250,240.50 = 250,240.50/x
3. Step 3: Cross multiply
   142,617x = 250,240.50 × 250,240.50
4. Step 4: Simplify right side
   142,617x = 62,620,307,840.25
5. Step 5: Solve for x
   x = 62,620,307,840.25/142,617
6. Step 6: Final answer
   x = 439,080.25