Finding the Third Proportional to 139,804,968 and 209,707,470

Step by Step Solution

1. Step 1: Write the proportion equation
   139,804,968 : 209,707,470 = 209,707,470 : x
2. Step 2: Convert to fraction form
   139,804,968/209,707,470 = 209,707,470/x
3. Step 3: Cross multiply
   139,804,968x = 209,707,470 × 209,707,470
4. Step 4: Simplify right side
   139,804,968x = 43,977,222,973,800,896
5. Step 5: Solve for x
   x = 43,977,222,973,800,896/139,804,968
6. Step 6: Final answer
   x = 314,561,232.00