Finding the Third Proportional to 2,115,458 and 4,650,820

Step by Step Solution

1. Step 1: Write the proportion equation
   2,115,458 : 4,650,820 = 4,650,820 : x
2. Step 2: Convert to fraction form
   2,115,458/4,650,820 = 4,650,820/x
3. Step 3: Cross multiply
   2,115,458x = 4,650,820 × 4,650,820
4. Step 4: Simplify right side
   2,115,458x = 21,630,126,672,400
5. Step 5: Solve for x
   x = 21,630,126,672,400/2,115,458
6. Step 6: Final answer
   x = 10,224,796.08