Finding the Third Proportional to 90,051.75 and 208,453.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,051.75 : 208,453.50 = 208,453.50 : x
2. Step 2: Convert to fraction form
   90,051.75/208,453.50 = 208,453.50/x
3. Step 3: Cross multiply
   90,051.75x = 208,453.50 × 208,453.50
4. Step 4: Simplify right side
   90,051.75x = 43,452,861,662.25
5. Step 5: Solve for x
   x = 43,452,861,662.25/90,051.75
6. Step 6: Final answer
   x = 482,532.12