Finding the Third Proportional to 5,490,248 and 7,920,408

Step by Step Solution

1. Step 1: Write the proportion equation
   5,490,248 : 7,920,408 = 7,920,408 : x
2. Step 2: Convert to fraction form
   5,490,248/7,920,408 = 7,920,408/x
3. Step 3: Cross multiply
   5,490,248x = 7,920,408 × 7,920,408
4. Step 4: Simplify right side
   5,490,248x = 62,732,862,886,464
5. Step 5: Solve for x
   x = 62,732,862,886,464/5,490,248
6. Step 6: Final answer
   x = 11,426,234.82