Finding the Third Proportional to 786,458 and 1,186,131

Step by Step Solution

1. Step 1: Write the proportion equation
   786,458 : 1,186,131 = 1,186,131 : x
2. Step 2: Convert to fraction form
   786,458/1,186,131 = 1,186,131/x
3. Step 3: Cross multiply
   786,458x = 1,186,131 × 1,186,131
4. Step 4: Simplify right side
   786,458x = 1,406,906,749,161
5. Step 5: Solve for x
   x = 1,406,906,749,161/786,458
6. Step 6: Final answer
   x = 1,788,915.30