Finding the Third Proportional to 1,865,470 and 4,078,916

Step by Step Solution

1. Step 1: Write the proportion equation
   1,865,470 : 4,078,916 = 4,078,916 : x
2. Step 2: Convert to fraction form
   1,865,470/4,078,916 = 4,078,916/x
3. Step 3: Cross multiply
   1,865,470x = 4,078,916 × 4,078,916
4. Step 4: Simplify right side
   1,865,470x = 16,637,555,735,056
5. Step 5: Solve for x
   x = 16,637,555,735,056/1,865,470
6. Step 6: Final answer
   x = 8,918,693.81