Finding the Third Proportional to 140,831,142 and 215,431,173

Step by Step Solution

1. Step 1: Write the proportion equation
   140,831,142 : 215,431,173 = 215,431,173 : x
2. Step 2: Convert to fraction form
   140,831,142/215,431,173 = 215,431,173/x
3. Step 3: Cross multiply
   140,831,142x = 215,431,173 × 215,431,173
4. Step 4: Simplify right side
   140,831,142x = 46,410,590,300,155,928
5. Step 5: Solve for x
   x = 46,410,590,300,155,928/140,831,142
6. Step 6: Final answer
   x = 329,547,780.70