Finding the Third Proportional to 2,564,400 and 4,060,665

Step by Step Solution

1. Step 1: Write the proportion equation
   2,564,400 : 4,060,665 = 4,060,665 : x
2. Step 2: Convert to fraction form
   2,564,400/4,060,665 = 4,060,665/x
3. Step 3: Cross multiply
   2,564,400x = 4,060,665 × 4,060,665
4. Step 4: Simplify right side
   2,564,400x = 16,489,000,242,225
5. Step 5: Solve for x
   x = 16,489,000,242,225/2,564,400
6. Step 6: Final answer
   x = 6,429,964.22