Finding the Third Proportional to 2,749,978 and 5,921,246

Step by Step Solution

1. Step 1: Write the proportion equation
   2,749,978 : 5,921,246 = 5,921,246 : x
2. Step 2: Convert to fraction form
   2,749,978/5,921,246 = 5,921,246/x
3. Step 3: Cross multiply
   2,749,978x = 5,921,246 × 5,921,246
4. Step 4: Simplify right side
   2,749,978x = 35,061,154,192,516
5. Step 5: Solve for x
   x = 35,061,154,192,516/2,749,978
6. Step 6: Final answer
   x = 12,749,612.61