Finding the Third Proportional to 5,579,940 and 7,897,776

Step by Step Solution

1. Step 1: Write the proportion equation
   5,579,940 : 7,897,776 = 7,897,776 : x
2. Step 2: Convert to fraction form
   5,579,940/7,897,776 = 7,897,776/x
3. Step 3: Cross multiply
   5,579,940x = 7,897,776 × 7,897,776
4. Step 4: Simplify right side
   5,579,940x = 62,374,865,746,176
5. Step 5: Solve for x
   x = 62,374,865,746,176/5,579,940
6. Step 6: Final answer
   x = 11,178,411.55