Finding the Third Proportional to 621,738 and 1,115,532

Step by Step Solution

1. Step 1: Write the proportion equation
   621,738 : 1,115,532 = 1,115,532 : x
2. Step 2: Convert to fraction form
   621,738/1,115,532 = 1,115,532/x
3. Step 3: Cross multiply
   621,738x = 1,115,532 × 1,115,532
4. Step 4: Simplify right side
   621,738x = 1,244,411,643,024
5. Step 5: Solve for x
   x = 1,244,411,643,024/621,738
6. Step 6: Final answer
   x = 2,001,504.88