Finding the Third Proportional to 686,088 and 1,060,236

Step by Step Solution

1. Step 1: Write the proportion equation
   686,088 : 1,060,236 = 1,060,236 : x
2. Step 2: Convert to fraction form
   686,088/1,060,236 = 1,060,236/x
3. Step 3: Cross multiply
   686,088x = 1,060,236 × 1,060,236
4. Step 4: Simplify right side
   686,088x = 1,124,100,375,696
5. Step 5: Solve for x
   x = 1,124,100,375,696/686,088
6. Step 6: Final answer
   x = 1,638,420.11