Finding the Third Proportional to 139,805,088 and 209,707,656

Step by Step Solution

1. Step 1: Write the proportion equation
   139,805,088 : 209,707,656 = 209,707,656 : x
2. Step 2: Convert to fraction form
   139,805,088/209,707,656 = 209,707,656/x
3. Step 3: Cross multiply
   139,805,088x = 209,707,656 × 209,707,656
4. Step 4: Simplify right side
   139,805,088x = 43,977,300,985,014,336
5. Step 5: Solve for x
   x = 43,977,300,985,014,336/139,805,088
6. Step 6: Final answer
   x = 314,561,520.00