Finding the Third Proportional to 168,991,028 and 356,139,628

Step by Step Solution

1. Step 1: Write the proportion equation
   168,991,028 : 356,139,628 = 356,139,628 : x
2. Step 2: Convert to fraction form
   168,991,028/356,139,628 = 356,139,628/x
3. Step 3: Cross multiply
   168,991,028x = 356,139,628 × 356,139,628
4. Step 4: Simplify right side
   168,991,028x = 126,835,434,631,978,384
5. Step 5: Solve for x
   x = 126,835,434,631,978,384/168,991,028
6. Step 6: Final answer
   x = 750,545,375.89