Finding the Third Proportional to 187,126 and 400,010

Step by Step Solution

1. Step 1: Write the proportion equation
   187,126 : 400,010 = 400,010 : x
2. Step 2: Convert to fraction form
   187,126/400,010 = 400,010/x
3. Step 3: Cross multiply
   187,126x = 400,010 × 400,010
4. Step 4: Simplify right side
   187,126x = 160,008,000,100
5. Step 5: Solve for x
   x = 160,008,000,100/187,126
6. Step 6: Final answer
   x = 855,081.60