Finding the Third Proportional to 1,680,920 and 2,515,440

Step by Step Solution

1. Step 1: Write the proportion equation
   1,680,920 : 2,515,440 = 2,515,440 : x
2. Step 2: Convert to fraction form
   1,680,920/2,515,440 = 2,515,440/x
3. Step 3: Cross multiply
   1,680,920x = 2,515,440 × 2,515,440
4. Step 4: Simplify right side
   1,680,920x = 6,327,438,393,600
5. Step 5: Solve for x
   x = 6,327,438,393,600/1,680,920
6. Step 6: Final answer
   x = 3,764,270.99