Finding the Third Proportional to 5,690,644 and 8,536,078

Step by Step Solution

1. Step 1: Write the proportion equation
   5,690,644 : 8,536,078 = 8,536,078 : x
2. Step 2: Convert to fraction form
   5,690,644/8,536,078 = 8,536,078/x
3. Step 3: Cross multiply
   5,690,644x = 8,536,078 × 8,536,078
4. Step 4: Simplify right side
   5,690,644x = 72,864,627,622,084
5. Step 5: Solve for x
   x = 72,864,627,622,084/5,690,644
6. Step 6: Final answer
   x = 12,804,285.00