Finding the Third Proportional to 611,513 and 1,438,851

Step by Step Solution

1. Step 1: Write the proportion equation
   611,513 : 1,438,851 = 1,438,851 : x
2. Step 2: Convert to fraction form
   611,513/1,438,851 = 1,438,851/x
3. Step 3: Cross multiply
   611,513x = 1,438,851 × 1,438,851
4. Step 4: Simplify right side
   611,513x = 2,070,292,200,201
5. Step 5: Solve for x
   x = 2,070,292,200,201/611,513
6. Step 6: Final answer
   x = 3,385,524.43