Finding the Third Proportional to 142,283 and 213,051.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,283 : 213,051.50 = 213,051.50 : x
2. Step 2: Convert to fraction form
   142,283/213,051.50 = 213,051.50/x
3. Step 3: Cross multiply
   142,283x = 213,051.50 × 213,051.50
4. Step 4: Simplify right side
   142,283x = 45,390,941,652.25
5. Step 5: Solve for x
   x = 45,390,941,652.25/142,283
6. Step 6: Final answer
   x = 319,018.73