Finding the Third Proportional to 168,991,034 and 356,139,640

Step by Step Solution

1. Step 1: Write the proportion equation
   168,991,034 : 356,139,640 = 356,139,640 : x
2. Step 2: Convert to fraction form
   168,991,034/356,139,640 = 356,139,640/x
3. Step 3: Cross multiply
   168,991,034x = 356,139,640 × 356,139,640
4. Step 4: Simplify right side
   168,991,034x = 126,835,443,179,329,600
5. Step 5: Solve for x
   x = 126,835,443,179,329,600/168,991,034
6. Step 6: Final answer
   x = 750,545,399.82