Finding the Third Proportional to 142,978,042 and 214,274,971.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,978,042 : 214,274,971.50 = 214,274,971.50 : x
2. Step 2: Convert to fraction form
   142,978,042/214,274,971.50 = 214,274,971.50/x
3. Step 3: Cross multiply
   142,978,042x = 214,274,971.50 × 214,274,971.50
4. Step 4: Simplify right side
   142,978,042x = 45,913,763,411,325,816
5. Step 5: Solve for x
   x = 45,913,763,411,325,816/142,978,042
6. Step 6: Final answer
   x = 321,124,578.08