Finding the Third Proportional to 438,167 and 705,442.50

Step by Step Solution

1. Step 1: Write the proportion equation
   438,167 : 705,442.50 = 705,442.50 : x
2. Step 2: Convert to fraction form
   438,167/705,442.50 = 705,442.50/x
3. Step 3: Cross multiply
   438,167x = 705,442.50 × 705,442.50
4. Step 4: Simplify right side
   438,167x = 497,649,120,806.25
5. Step 5: Solve for x
   x = 497,649,120,806.25/438,167
6. Step 6: Final answer
   x = 1,135,752.17