Finding the Third Proportional to 142,345 and 218,341.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,345 : 218,341.50 = 218,341.50 : x
2. Step 2: Convert to fraction form
   142,345/218,341.50 = 218,341.50/x
3. Step 3: Cross multiply
   142,345x = 218,341.50 × 218,341.50
4. Step 4: Simplify right side
   142,345x = 47,673,010,622.25
5. Step 5: Solve for x
   x = 47,673,010,622.25/142,345
6. Step 6: Final answer
   x = 334,911.73