Finding the Third Proportional to 5,673,090 and 8,515,446

Step by Step Solution

1. Step 1: Write the proportion equation
   5,673,090 : 8,515,446 = 8,515,446 : x
2. Step 2: Convert to fraction form
   5,673,090/8,515,446 = 8,515,446/x
3. Step 3: Cross multiply
   5,673,090x = 8,515,446 × 8,515,446
4. Step 4: Simplify right side
   5,673,090x = 72,512,820,578,916
5. Step 5: Solve for x
   x = 72,512,820,578,916/5,673,090
6. Step 6: Final answer
   x = 12,781,891.45