Finding the Third Proportional to 173,484 and 378,418.50

Step by Step Solution

1. Step 1: Write the proportion equation
   173,484 : 378,418.50 = 378,418.50 : x
2. Step 2: Convert to fraction form
   173,484/378,418.50 = 378,418.50/x
3. Step 3: Cross multiply
   173,484x = 378,418.50 × 378,418.50
4. Step 4: Simplify right side
   173,484x = 143,200,561,142.25
5. Step 5: Solve for x
   x = 143,200,561,142.25/173,484
6. Step 6: Final answer
   x = 825,439.59