Finding the Third Proportional to 187,682.50 and 390,897

Step by Step Solution

1. Step 1: Write the proportion equation
   187,682.50 : 390,897 = 390,897 : x
2. Step 2: Convert to fraction form
   187,682.50/390,897 = 390,897/x
3. Step 3: Cross multiply
   187,682.50x = 390,897 × 390,897
4. Step 4: Simplify right side
   187,682.50x = 152,800,464,609
5. Step 5: Solve for x
   x = 152,800,464,609/187,682.50
6. Step 6: Final answer
   x = 814,143.38