Finding the Third Proportional to 619,866.50 and 939,156

Step by Step Solution

1. Step 1: Write the proportion equation
   619,866.50 : 939,156 = 939,156 : x
2. Step 2: Convert to fraction form
   619,866.50/939,156 = 939,156/x
3. Step 3: Cross multiply
   619,866.50x = 939,156 × 939,156
4. Step 4: Simplify right side
   619,866.50x = 882,013,992,336
5. Step 5: Solve for x
   x = 882,013,992,336/619,866.50
6. Step 6: Final answer
   x = 1,422,909.60