Finding the Third Proportional to 123,518 and 266,236

Step by Step Solution

1. Step 1: Write the proportion equation
   123,518 : 266,236 = 266,236 : x
2. Step 2: Convert to fraction form
   123,518/266,236 = 266,236/x
3. Step 3: Cross multiply
   123,518x = 266,236 × 266,236
4. Step 4: Simplify right side
   123,518x = 70,881,607,696
5. Step 5: Solve for x
   x = 70,881,607,696/123,518
6. Step 6: Final answer
   x = 573,856.50