Finding the Third Proportional to 142,394 and 303,192.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,394 : 303,192.50 = 303,192.50 : x
2. Step 2: Convert to fraction form
   142,394/303,192.50 = 303,192.50/x
3. Step 3: Cross multiply
   142,394x = 303,192.50 × 303,192.50
4. Step 4: Simplify right side
   142,394x = 91,925,692,056.25
5. Step 5: Solve for x
   x = 91,925,692,056.25/142,394
6. Step 6: Final answer
   x = 645,572.79