Finding the Third Proportional to 5,664,566 and 8,543,856

Step by Step Solution

1. Step 1: Write the proportion equation
   5,664,566 : 8,543,856 = 8,543,856 : x
2. Step 2: Convert to fraction form
   5,664,566/8,543,856 = 8,543,856/x
3. Step 3: Cross multiply
   5,664,566x = 8,543,856 × 8,543,856
4. Step 4: Simplify right side
   5,664,566x = 72,997,475,348,736
5. Step 5: Solve for x
   x = 72,997,475,348,736/5,664,566
6. Step 6: Final answer
   x = 12,886,684.58