Finding the Third Proportional to 1,638,432 and 3,564,454

Step by Step Solution

1. Step 1: Write the proportion equation
   1,638,432 : 3,564,454 = 3,564,454 : x
2. Step 2: Convert to fraction form
   1,638,432/3,564,454 = 3,564,454/x
3. Step 3: Cross multiply
   1,638,432x = 3,564,454 × 3,564,454
4. Step 4: Simplify right side
   1,638,432x = 12,705,332,318,116
5. Step 5: Solve for x
   x = 12,705,332,318,116/1,638,432
6. Step 6: Final answer
   x = 7,754,567.98