Finding the Third Proportional to 201,210 and 426,409.50

Step by Step Solution

1. Step 1: Write the proportion equation
   201,210 : 426,409.50 = 426,409.50 : x
2. Step 2: Convert to fraction form
   201,210/426,409.50 = 426,409.50/x
3. Step 3: Cross multiply
   201,210x = 426,409.50 × 426,409.50
4. Step 4: Simplify right side
   201,210x = 181,825,061,690.25
5. Step 5: Solve for x
   x = 181,825,061,690.25/201,210
6. Step 6: Final answer
   x = 903,658.18