Finding the Third Proportional to 142,490 and 304,050

Step by Step Solution

1. Step 1: Write the proportion equation
   142,490 : 304,050 = 304,050 : x
2. Step 2: Convert to fraction form
   142,490/304,050 = 304,050/x
3. Step 3: Cross multiply
   142,490x = 304,050 × 304,050
4. Step 4: Simplify right side
   142,490x = 92,446,402,500
5. Step 5: Solve for x
   x = 92,446,402,500/142,490
6. Step 6: Final answer
   x = 648,792.21