Finding the Third Proportional to 139,815,996 and 217,085,275

Step by Step Solution

1. Step 1: Write the proportion equation
   139,815,996 : 217,085,275 = 217,085,275 : x
2. Step 2: Convert to fraction form
   139,815,996/217,085,275 = 217,085,275/x
3. Step 3: Cross multiply
   139,815,996x = 217,085,275 × 217,085,275
4. Step 4: Simplify right side
   139,815,996x = 47,126,016,621,825,624
5. Step 5: Solve for x
   x = 47,126,016,621,825,624/139,815,996
6. Step 6: Final answer
   x = 337,057,403.80