Finding the Third Proportional to 218,830 and 471,136

Step by Step Solution

1. Step 1: Write the proportion equation
   218,830 : 471,136 = 471,136 : x
2. Step 2: Convert to fraction form
   218,830/471,136 = 471,136/x
3. Step 3: Cross multiply
   218,830x = 471,136 × 471,136
4. Step 4: Simplify right side
   218,830x = 221,969,130,496
5. Step 5: Solve for x
   x = 221,969,130,496/218,830
6. Step 6: Final answer
   x = 1,014,345.06