Finding the Third Proportional to 329,115,028 and 685,470,712

Step by Step Solution

1. Step 1: Write the proportion equation
   329,115,028 : 685,470,712 = 685,470,712 : x
2. Step 2: Convert to fraction form
   329,115,028/685,470,712 = 685,470,712/x
3. Step 3: Cross multiply
   329,115,028x = 685,470,712 × 685,470,712
4. Step 4: Simplify right side
   329,115,028x = 469,870,097,009,786,944
5. Step 5: Solve for x
   x = 469,870,097,009,786,944/329,115,028
6. Step 6: Final answer
   x = 1,427,677,428.97