Finding the Third Proportional to 139,805,168 and 209,707,764

Step by Step Solution

1. Step 1: Write the proportion equation
   139,805,168 : 209,707,764 = 209,707,764 : x
2. Step 2: Convert to fraction form
   139,805,168/209,707,764 = 209,707,764/x
3. Step 3: Cross multiply
   139,805,168x = 209,707,764 × 209,707,764
4. Step 4: Simplify right side
   139,805,168x = 43,977,346,281,879,696
5. Step 5: Solve for x
   x = 43,977,346,281,879,696/139,805,168
6. Step 6: Final answer
   x = 314,561,664.00