Finding the Third Proportional to 1,447,578 and 2,129,238

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447,578 : 2,129,238 = 2,129,238 : x
2. Step 2: Convert to fraction form
   1,447,578/2,129,238 = 2,129,238/x
3. Step 3: Cross multiply
   1,447,578x = 2,129,238 × 2,129,238
4. Step 4: Simplify right side
   1,447,578x = 4,533,654,460,644
5. Step 5: Solve for x
   x = 4,533,654,460,644/1,447,578
6. Step 6: Final answer
   x = 3,131,889.58