Finding the Third Proportional to 145,663.31 and 301,441.50

Step by Step Solution

1. Step 1: Write the proportion equation
   145,663.31 : 301,441.50 = 301,441.50 : x
2. Step 2: Convert to fraction form
   145,663.31/301,441.50 = 301,441.50/x
3. Step 3: Cross multiply
   145,663.31x = 301,441.50 × 301,441.50
4. Step 4: Simplify right side
   145,663.31x = 90,866,977,922.25
5. Step 5: Solve for x
   x = 90,866,977,922.25/145,663.31
6. Step 6: Final answer
   x = 623,815.13