Finding the Third Proportional to 2,158,376 and 3,118,221

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,376 : 3,118,221 = 3,118,221 : x
2. Step 2: Convert to fraction form
   2,158,376/3,118,221 = 3,118,221/x
3. Step 3: Cross multiply
   2,158,376x = 3,118,221 × 3,118,221
4. Step 4: Simplify right side
   2,158,376x = 9,723,302,204,841
5. Step 5: Solve for x
   x = 9,723,302,204,841/2,158,376
6. Step 6: Final answer
   x = 4,504,915.83