Finding the Third Proportional to 139,804,942 and 209,707,435

Step by Step Solution

1. Step 1: Write the proportion equation
   139,804,942 : 209,707,435 = 209,707,435 : x
2. Step 2: Convert to fraction form
   139,804,942/209,707,435 = 209,707,435/x
3. Step 3: Cross multiply
   139,804,942x = 209,707,435 × 209,707,435
4. Step 4: Simplify right side
   139,804,942x = 43,977,208,294,279,224
5. Step 5: Solve for x
   x = 43,977,208,294,279,224/139,804,942
6. Step 6: Final answer
   x = 314,561,185.50