Finding the Third Proportional to 774,098.50 and 1,618,778.50

Step by Step Solution

1. Step 1: Write the proportion equation
   774,098.50 : 1,618,778.50 = 1,618,778.50 : x
2. Step 2: Convert to fraction form
   774,098.50/1,618,778.50 = 1,618,778.50/x
3. Step 3: Cross multiply
   774,098.50x = 1,618,778.50 × 1,618,778.50
4. Step 4: Simplify right side
   774,098.50x = 2,620,443,832,062.25
5. Step 5: Solve for x
   x = 2,620,443,832,062.25/774,098.50
6. Step 6: Final answer
   x = 3,385,155.55