Finding the Third Proportional to 290,583 and 436,171.50

Step by Step Solution

1. Step 1: Write the proportion equation
   290,583 : 436,171.50 = 436,171.50 : x
2. Step 2: Convert to fraction form
   290,583/436,171.50 = 436,171.50/x
3. Step 3: Cross multiply
   290,583x = 436,171.50 × 436,171.50
4. Step 4: Simplify right side
   290,583x = 190,245,577,412.25
5. Step 5: Solve for x
   x = 190,245,577,412.25/290,583
6. Step 6: Final answer
   x = 654,703.05