Finding the Third Proportional to 179,298.50 and 390,143.25

Step by Step Solution

1. Step 1: Write the proportion equation
   179,298.50 : 390,143.25 = 390,143.25 : x
2. Step 2: Convert to fraction form
   179,298.50/390,143.25 = 390,143.25/x
3. Step 3: Cross multiply
   179,298.50x = 390,143.25 × 390,143.25
4. Step 4: Simplify right side
   179,298.50x = 152,211,755,520.56
5. Step 5: Solve for x
   x = 152,211,755,520.56/179,298.50
6. Step 6: Final answer
   x = 848,929.33