Finding the Third Proportional to 179,415 and 390,379.50

Step by Step Solution

1. Step 1: Write the proportion equation
   179,415 : 390,379.50 = 390,379.50 : x
2. Step 2: Convert to fraction form
   179,415/390,379.50 = 390,379.50/x
3. Step 3: Cross multiply
   179,415x = 390,379.50 × 390,379.50
4. Step 4: Simplify right side
   179,415x = 152,396,154,020.25
5. Step 5: Solve for x
   x = 152,396,154,020.25/179,415
6. Step 6: Final answer
   x = 849,405.87