Finding the Third Proportional to 1,772,490 and 3,865,780

Step by Step Solution

1. Step 1: Write the proportion equation
   1,772,490 : 3,865,780 = 3,865,780 : x
2. Step 2: Convert to fraction form
   1,772,490/3,865,780 = 3,865,780/x
3. Step 3: Cross multiply
   1,772,490x = 3,865,780 × 3,865,780
4. Step 4: Simplify right side
   1,772,490x = 14,944,255,008,400
5. Step 5: Solve for x
   x = 14,944,255,008,400/1,772,490
6. Step 6: Final answer
   x = 8,431,221.06