Finding the Third Proportional to 139,804,908 and 209,707,380

Step by Step Solution

1. Step 1: Write the proportion equation
   139,804,908 : 209,707,380 = 209,707,380 : x
2. Step 2: Convert to fraction form
   139,804,908/209,707,380 = 209,707,380/x
3. Step 3: Cross multiply
   139,804,908x = 209,707,380 × 209,707,380
4. Step 4: Simplify right side
   139,804,908x = 43,977,185,226,464,400
5. Step 5: Solve for x
   x = 43,977,185,226,464,400/139,804,908
6. Step 6: Final answer
   x = 314,561,097.00