Finding the Third Proportional to 3,643,688 and 5,445,432

Step by Step Solution

1. Step 1: Write the proportion equation
   3,643,688 : 5,445,432 = 5,445,432 : x
2. Step 2: Convert to fraction form
   3,643,688/5,445,432 = 5,445,432/x
3. Step 3: Cross multiply
   3,643,688x = 5,445,432 × 5,445,432
4. Step 4: Simplify right side
   3,643,688x = 29,652,729,666,624
5. Step 5: Solve for x
   x = 29,652,729,666,624/3,643,688
6. Step 6: Final answer
   x = 8,138,108.88