Finding the Third Proportional to 187,003 and 405,710

Step by Step Solution

1. Step 1: Write the proportion equation
   187,003 : 405,710 = 405,710 : x
2. Step 2: Convert to fraction form
   187,003/405,710 = 405,710/x
3. Step 3: Cross multiply
   187,003x = 405,710 × 405,710
4. Step 4: Simplify right side
   187,003x = 164,600,604,100
5. Step 5: Solve for x
   x = 164,600,604,100/187,003
6. Step 6: Final answer
   x = 880,203.01