Finding the Third Proportional to 499,504.50 and 779,898

Step by Step Solution

1. Step 1: Write the proportion equation
   499,504.50 : 779,898 = 779,898 : x
2. Step 2: Convert to fraction form
   499,504.50/779,898 = 779,898/x
3. Step 3: Cross multiply
   499,504.50x = 779,898 × 779,898
4. Step 4: Simplify right side
   499,504.50x = 608,240,890,404
5. Step 5: Solve for x
   x = 608,240,890,404/499,504.50
6. Step 6: Final answer
   x = 1,217,688.51