Finding the Third Proportional to 458,803 and 674,816.50

Step by Step Solution

1. Step 1: Write the proportion equation
   458,803 : 674,816.50 = 674,816.50 : x
2. Step 2: Convert to fraction form
   458,803/674,816.50 = 674,816.50/x
3. Step 3: Cross multiply
   458,803x = 674,816.50 × 674,816.50
4. Step 4: Simplify right side
   458,803x = 455,377,308,672.25
5. Step 5: Solve for x
   x = 455,377,308,672.25/458,803
6. Step 6: Final answer
   x = 992,533.42