Finding the Third Proportional to 142,488 and 304,045.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,488 : 304,045.50 = 304,045.50 : x
2. Step 2: Convert to fraction form
   142,488/304,045.50 = 304,045.50/x
3. Step 3: Cross multiply
   142,488x = 304,045.50 × 304,045.50
4. Step 4: Simplify right side
   142,488x = 92,443,666,070.25
5. Step 5: Solve for x
   x = 92,443,666,070.25/142,488
6. Step 6: Final answer
   x = 648,782.12