Finding the Third Proportional to 264,855 and 403,402.50

Step by Step Solution

1. Step 1: Write the proportion equation
   264,855 : 403,402.50 = 403,402.50 : x
2. Step 2: Convert to fraction form
   264,855/403,402.50 = 403,402.50/x
3. Step 3: Cross multiply
   264,855x = 403,402.50 × 403,402.50
4. Step 4: Simplify right side
   264,855x = 162,733,577,006.25
5. Step 5: Solve for x
   x = 162,733,577,006.25/264,855
6. Step 6: Final answer
   x = 614,425.16