Finding the Third Proportional to 172,105 and 372,807.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,105 : 372,807.50 = 372,807.50 : x
2. Step 2: Convert to fraction form
   172,105/372,807.50 = 372,807.50/x
3. Step 3: Cross multiply
   172,105x = 372,807.50 × 372,807.50
4. Step 4: Simplify right side
   172,105x = 138,985,432,056.25
5. Step 5: Solve for x
   x = 138,985,432,056.25/172,105
6. Step 6: Final answer
   x = 807,561.85