Finding the Third Proportional to 1,260,280 and 1,913,720

Step by Step Solution

1. Step 1: Write the proportion equation
   1,260,280 : 1,913,720 = 1,913,720 : x
2. Step 2: Convert to fraction form
   1,260,280/1,913,720 = 1,913,720/x
3. Step 3: Cross multiply
   1,260,280x = 1,913,720 × 1,913,720
4. Step 4: Simplify right side
   1,260,280x = 3,662,324,238,400
5. Step 5: Solve for x
   x = 3,662,324,238,400/1,260,280
6. Step 6: Final answer
   x = 2,905,960.77