Finding the Third Proportional to 250,506 and 387,931.50

Step by Step Solution

1. Step 1: Write the proportion equation
   250,506 : 387,931.50 = 387,931.50 : x
2. Step 2: Convert to fraction form
   250,506/387,931.50 = 387,931.50/x
3. Step 3: Cross multiply
   250,506x = 387,931.50 × 387,931.50
4. Step 4: Simplify right side
   250,506x = 150,490,848,692.25
5. Step 5: Solve for x
   x = 150,490,848,692.25/250,506
6. Step 6: Final answer
   x = 600,747.48