Finding the Third Proportional to 208,177.50 and 453,978

Step by Step Solution

1. Step 1: Write the proportion equation
   208,177.50 : 453,978 = 453,978 : x
2. Step 2: Convert to fraction form
   208,177.50/453,978 = 453,978/x
3. Step 3: Cross multiply
   208,177.50x = 453,978 × 453,978
4. Step 4: Simplify right side
   208,177.50x = 206,096,024,484
5. Step 5: Solve for x
   x = 206,096,024,484/208,177.50
6. Step 6: Final answer
   x = 990,001.44