Finding the Third Proportional to 2,115,780 and 3,223,246

Step by Step Solution

1. Step 1: Write the proportion equation
   2,115,780 : 3,223,246 = 3,223,246 : x
2. Step 2: Convert to fraction form
   2,115,780/3,223,246 = 3,223,246/x
3. Step 3: Cross multiply
   2,115,780x = 3,223,246 × 3,223,246
4. Step 4: Simplify right side
   2,115,780x = 10,389,314,776,516
5. Step 5: Solve for x
   x = 10,389,314,776,516/2,115,780
6. Step 6: Final answer
   x = 4,910,394.64