Finding the Third Proportional to 5,490,222 and 7,920,369

Step by Step Solution

1. Step 1: Write the proportion equation
   5,490,222 : 7,920,369 = 7,920,369 : x
2. Step 2: Convert to fraction form
   5,490,222/7,920,369 = 7,920,369/x
3. Step 3: Cross multiply
   5,490,222x = 7,920,369 × 7,920,369
4. Step 4: Simplify right side
   5,490,222x = 62,732,245,096,161
5. Step 5: Solve for x
   x = 62,732,245,096,161/5,490,222
6. Step 6: Final answer
   x = 11,426,176.41