Finding the Third Proportional to 267,138 and 630,625.50

Step by Step Solution

1. Step 1: Write the proportion equation
   267,138 : 630,625.50 = 630,625.50 : x
2. Step 2: Convert to fraction form
   267,138/630,625.50 = 630,625.50/x
3. Step 3: Cross multiply
   267,138x = 630,625.50 × 630,625.50
4. Step 4: Simplify right side
   267,138x = 397,688,521,250.25
5. Step 5: Solve for x
   x = 397,688,521,250.25/267,138
6. Step 6: Final answer
   x = 1,488,700.68