Finding the Third Proportional to 165,933 and 390,043.50

Step by Step Solution

1. Step 1: Write the proportion equation
   165,933 : 390,043.50 = 390,043.50 : x
2. Step 2: Convert to fraction form
   165,933/390,043.50 = 390,043.50/x
3. Step 3: Cross multiply
   165,933x = 390,043.50 × 390,043.50
4. Step 4: Simplify right side
   165,933x = 152,133,931,892.25
5. Step 5: Solve for x
   x = 152,133,931,892.25/165,933
6. Step 6: Final answer
   x = 916,839.52