Finding the Third Proportional to 142,692.25 and 307,459

Step by Step Solution

1. Step 1: Write the proportion equation
   142,692.25 : 307,459 = 307,459 : x
2. Step 2: Convert to fraction form
   142,692.25/307,459 = 307,459/x
3. Step 3: Cross multiply
   142,692.25x = 307,459 × 307,459
4. Step 4: Simplify right side
   142,692.25x = 94,531,036,681
5. Step 5: Solve for x
   x = 94,531,036,681/142,692.25
6. Step 6: Final answer
   x = 662,481.93