Finding the Third Proportional to 2,115,480 and 4,650,864

Step by Step Solution

1. Step 1: Write the proportion equation
   2,115,480 : 4,650,864 = 4,650,864 : x
2. Step 2: Convert to fraction form
   2,115,480/4,650,864 = 4,650,864/x
3. Step 3: Cross multiply
   2,115,480x = 4,650,864 × 4,650,864
4. Step 4: Simplify right side
   2,115,480x = 21,630,535,946,496
5. Step 5: Solve for x
   x = 21,630,535,946,496/2,115,480
6. Step 6: Final answer
   x = 10,224,883.22