Finding the Third Proportional to 619,420.50 and 908,659.69

Step by Step Solution

1. Step 1: Write the proportion equation
   619,420.50 : 908,659.69 = 908,659.69 : x
2. Step 2: Convert to fraction form
   619,420.50/908,659.69 = 908,659.69/x
3. Step 3: Cross multiply
   619,420.50x = 908,659.69 × 908,659.69
4. Step 4: Simplify right side
   619,420.50x = 825,662,427,687.60
5. Step 5: Solve for x
   x = 825,662,427,687.60/619,420.50
6. Step 6: Final answer
   x = 1,332,959.48