Finding the Third Proportional to 139,804,982 and 209,707,491

Step by Step Solution

1. Step 1: Write the proportion equation
   139,804,982 : 209,707,491 = 209,707,491 : x
2. Step 2: Convert to fraction form
   139,804,982/209,707,491 = 209,707,491/x
3. Step 3: Cross multiply
   139,804,982x = 209,707,491 × 209,707,491
4. Step 4: Simplify right side
   139,804,982x = 43,977,231,781,515,080
5. Step 5: Solve for x
   x = 43,977,231,781,515,080/139,804,982
6. Step 6: Final answer
   x = 314,561,263.50