Finding the Third Proportional to 5,608,160 and 8,402,688

Step by Step Solution

1. Step 1: Write the proportion equation
   5,608,160 : 8,402,688 = 8,402,688 : x
2. Step 2: Convert to fraction form
   5,608,160/8,402,688 = 8,402,688/x
3. Step 3: Cross multiply
   5,608,160x = 8,402,688 × 8,402,688
4. Step 4: Simplify right side
   5,608,160x = 70,605,165,625,344
5. Step 5: Solve for x
   x = 70,605,165,625,344/5,608,160
6. Step 6: Final answer
   x = 12,589,720.27