Finding the Third Proportional to 290,601 and 437,575.50

Step by Step Solution

1. Step 1: Write the proportion equation
   290,601 : 437,575.50 = 437,575.50 : x
2. Step 2: Convert to fraction form
   290,601/437,575.50 = 437,575.50/x
3. Step 3: Cross multiply
   290,601x = 437,575.50 × 437,575.50
4. Step 4: Simplify right side
   290,601x = 191,472,318,200.25
5. Step 5: Solve for x
   x = 191,472,318,200.25/290,601
6. Step 6: Final answer
   x = 658,883.89