Finding the Third Proportional to 208,174.50 and 405,981

Step by Step Solution

1. Step 1: Write the proportion equation
   208,174.50 : 405,981 = 405,981 : x
2. Step 2: Convert to fraction form
   208,174.50/405,981 = 405,981/x
3. Step 3: Cross multiply
   208,174.50x = 405,981 × 405,981
4. Step 4: Simplify right side
   208,174.50x = 164,820,572,361
5. Step 5: Solve for x
   x = 164,820,572,361/208,174.50
6. Step 6: Final answer
   x = 791,742.37