Finding the Third Proportional to 5,574,816 and 8,439,363

Step by Step Solution

1. Step 1: Write the proportion equation
   5,574,816 : 8,439,363 = 8,439,363 : x
2. Step 2: Convert to fraction form
   5,574,816/8,439,363 = 8,439,363/x
3. Step 3: Cross multiply
   5,574,816x = 8,439,363 × 8,439,363
4. Step 4: Simplify right side
   5,574,816x = 71,222,847,845,769
5. Step 5: Solve for x
   x = 71,222,847,845,769/5,574,816
6. Step 6: Final answer
   x = 12,775,820.38