Finding the Third Proportional to 3,471,478 and 5,374,688

Step by Step Solution

1. Step 1: Write the proportion equation
   3,471,478 : 5,374,688 = 5,374,688 : x
2. Step 2: Convert to fraction form
   3,471,478/5,374,688 = 5,374,688/x
3. Step 3: Cross multiply
   3,471,478x = 5,374,688 × 5,374,688
4. Step 4: Simplify right side
   3,471,478x = 28,887,271,097,344
5. Step 5: Solve for x
   x = 28,887,271,097,344/3,471,478
6. Step 6: Final answer
   x = 8,321,317.63