Finding the Third Proportional to 5,617,768 and 8,485,690

Step by Step Solution

1. Step 1: Write the proportion equation
   5,617,768 : 8,485,690 = 8,485,690 : x
2. Step 2: Convert to fraction form
   5,617,768/8,485,690 = 8,485,690/x
3. Step 3: Cross multiply
   5,617,768x = 8,485,690 × 8,485,690
4. Step 4: Simplify right side
   5,617,768x = 72,006,934,776,100
5. Step 5: Solve for x
   x = 72,006,934,776,100/5,617,768
6. Step 6: Final answer
   x = 12,817,712.44