Finding the Third Proportional to 139,804,909 and 209,707,383

Step by Step Solution

1. Step 1: Write the proportion equation
   139,804,909 : 209,707,383 = 209,707,383 : x
2. Step 2: Convert to fraction form
   139,804,909/209,707,383 = 209,707,383/x
3. Step 3: Cross multiply
   139,804,909x = 209,707,383 × 209,707,383
4. Step 4: Simplify right side
   139,804,909x = 43,977,186,484,708,688
5. Step 5: Solve for x
   x = 43,977,186,484,708,688/139,804,909
6. Step 6: Final answer
   x = 314,561,103.75