Finding the Third Proportional to 435,738 and 666,148

Step by Step Solution

1. Step 1: Write the proportion equation
   435,738 : 666,148 = 666,148 : x
2. Step 2: Convert to fraction form
   435,738/666,148 = 666,148/x
3. Step 3: Cross multiply
   435,738x = 666,148 × 666,148
4. Step 4: Simplify right side
   435,738x = 443,753,157,904
5. Step 5: Solve for x
   x = 443,753,157,904/435,738
6. Step 6: Final answer
   x = 1,018,394.44