Finding the Third Proportional to 149,104.50 and 310,783

Step by Step Solution

1. Step 1: Write the proportion equation
   149,104.50 : 310,783 = 310,783 : x
2. Step 2: Convert to fraction form
   149,104.50/310,783 = 310,783/x
3. Step 3: Cross multiply
   149,104.50x = 310,783 × 310,783
4. Step 4: Simplify right side
   149,104.50x = 96,586,073,089
5. Step 5: Solve for x
   x = 96,586,073,089/149,104.50
6. Step 6: Final answer
   x = 647,774.37