Finding the Third Proportional to 3,906,842 and 8,445,319

Step by Step Solution

1. Step 1: Write the proportion equation
   3,906,842 : 8,445,319 = 8,445,319 : x
2. Step 2: Convert to fraction form
   3,906,842/8,445,319 = 8,445,319/x
3. Step 3: Cross multiply
   3,906,842x = 8,445,319 × 8,445,319
4. Step 4: Simplify right side
   3,906,842x = 71,323,413,011,761
5. Step 5: Solve for x
   x = 71,323,413,011,761/3,906,842
6. Step 6: Final answer
   x = 18,256,026.99