Finding the Third Proportional to 290,871 and 426,730.50

Step by Step Solution

1. Step 1: Write the proportion equation
   290,871 : 426,730.50 = 426,730.50 : x
2. Step 2: Convert to fraction form
   290,871/426,730.50 = 426,730.50/x
3. Step 3: Cross multiply
   290,871x = 426,730.50 × 426,730.50
4. Step 4: Simplify right side
   290,871x = 182,098,919,630.25
5. Step 5: Solve for x
   x = 182,098,919,630.25/290,871
6. Step 6: Final answer
   x = 626,047.01