Finding the Third Proportional to 642,844 and 951,144

Step by Step Solution

1. Step 1: Write the proportion equation
   642,844 : 951,144 = 951,144 : x
2. Step 2: Convert to fraction form
   642,844/951,144 = 951,144/x
3. Step 3: Cross multiply
   642,844x = 951,144 × 951,144
4. Step 4: Simplify right side
   642,844x = 904,674,908,736
5. Step 5: Solve for x
   x = 904,674,908,736/642,844
6. Step 6: Final answer
   x = 1,407,300.85