Finding the Third Proportional to 142,186 and 307,173.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,186 : 307,173.50 = 307,173.50 : x
2. Step 2: Convert to fraction form
   142,186/307,173.50 = 307,173.50/x
3. Step 3: Cross multiply
   142,186x = 307,173.50 × 307,173.50
4. Step 4: Simplify right side
   142,186x = 94,355,559,102.25
5. Step 5: Solve for x
   x = 94,355,559,102.25/142,186
6. Step 6: Final answer
   x = 663,606.54