Finding the Third Proportional to 308,421 and 483,931.50

Step by Step Solution

1. Step 1: Write the proportion equation
   308,421 : 483,931.50 = 483,931.50 : x
2. Step 2: Convert to fraction form
   308,421/483,931.50 = 483,931.50/x
3. Step 3: Cross multiply
   308,421x = 483,931.50 × 483,931.50
4. Step 4: Simplify right side
   308,421x = 234,189,696,692.25
5. Step 5: Solve for x
   x = 234,189,696,692.25/308,421
6. Step 6: Final answer
   x = 759,318.26