Finding the Third Proportional to 139,804,972 and 209,707,476

Step by Step Solution

1. Step 1: Write the proportion equation
   139,804,972 : 209,707,476 = 209,707,476 : x
2. Step 2: Convert to fraction form
   139,804,972/209,707,476 = 209,707,476/x
3. Step 3: Cross multiply
   139,804,972x = 209,707,476 × 209,707,476
4. Step 4: Simplify right side
   139,804,972x = 43,977,225,490,290,576
5. Step 5: Solve for x
   x = 43,977,225,490,290,576/139,804,972
6. Step 6: Final answer
   x = 314,561,241.00