Finding the Third Proportional to 687,236 and 1,045,434

Step by Step Solution

1. Step 1: Write the proportion equation
   687,236 : 1,045,434 = 1,045,434 : x
2. Step 2: Convert to fraction form
   687,236/1,045,434 = 1,045,434/x
3. Step 3: Cross multiply
   687,236x = 1,045,434 × 1,045,434
4. Step 4: Simplify right side
   687,236x = 1,092,932,248,356
5. Step 5: Solve for x
   x = 1,092,932,248,356/687,236
6. Step 6: Final answer
   x = 1,590,330.32