Finding the Third Proportional to 5,580,636 and 8,411,946

Step by Step Solution

1. Step 1: Write the proportion equation
   5,580,636 : 8,411,946 = 8,411,946 : x
2. Step 2: Convert to fraction form
   5,580,636/8,411,946 = 8,411,946/x
3. Step 3: Cross multiply
   5,580,636x = 8,411,946 × 8,411,946
4. Step 4: Simplify right side
   5,580,636x = 70,760,835,506,916
5. Step 5: Solve for x
   x = 70,760,835,506,916/5,580,636
6. Step 6: Final answer
   x = 12,679,708.10