Finding the Third Proportional to 1,607,366 and 2,188,915

Step by Step Solution

1. Step 1: Write the proportion equation
   1,607,366 : 2,188,915 = 2,188,915 : x
2. Step 2: Convert to fraction form
   1,607,366/2,188,915 = 2,188,915/x
3. Step 3: Cross multiply
   1,607,366x = 2,188,915 × 2,188,915
4. Step 4: Simplify right side
   1,607,366x = 4,791,348,877,225
5. Step 5: Solve for x
   x = 4,791,348,877,225/1,607,366
6. Step 6: Final answer
   x = 2,980,869.87