Finding the Third Proportional to 763,144 and 1,208,138

Step by Step Solution

1. Step 1: Write the proportion equation
   763,144 : 1,208,138 = 1,208,138 : x
2. Step 2: Convert to fraction form
   763,144/1,208,138 = 1,208,138/x
3. Step 3: Cross multiply
   763,144x = 1,208,138 × 1,208,138
4. Step 4: Simplify right side
   763,144x = 1,459,597,427,044
5. Step 5: Solve for x
   x = 1,459,597,427,044/763,144
6. Step 6: Final answer
   x = 1,912,610.76