Finding the Third Proportional to 1,868,428 and 4,085,840

Step by Step Solution

1. Step 1: Write the proportion equation
   1,868,428 : 4,085,840 = 4,085,840 : x
2. Step 2: Convert to fraction form
   1,868,428/4,085,840 = 4,085,840/x
3. Step 3: Cross multiply
   1,868,428x = 4,085,840 × 4,085,840
4. Step 4: Simplify right side
   1,868,428x = 16,694,088,505,600
5. Step 5: Solve for x
   x = 16,694,088,505,600/1,868,428
6. Step 6: Final answer
   x = 8,934,831.05