Finding the Third Proportional to 393,423 and 923,779.50

Step by Step Solution

1. Step 1: Write the proportion equation
   393,423 : 923,779.50 = 923,779.50 : x
2. Step 2: Convert to fraction form
   393,423/923,779.50 = 923,779.50/x
3. Step 3: Cross multiply
   393,423x = 923,779.50 × 923,779.50
4. Step 4: Simplify right side
   393,423x = 853,368,564,620.25
5. Step 5: Solve for x
   x = 853,368,564,620.25/393,423
6. Step 6: Final answer
   x = 2,169,086.62