Finding the Third Proportional to 139,804,940 and 209,707,432

Step by Step Solution

1. Step 1: Write the proportion equation
   139,804,940 : 209,707,432 = 209,707,432 : x
2. Step 2: Convert to fraction form
   139,804,940/209,707,432 = 209,707,432/x
3. Step 3: Cross multiply
   139,804,940x = 209,707,432 × 209,707,432
4. Step 4: Simplify right side
   139,804,940x = 43,977,207,036,034,624
5. Step 5: Solve for x
   x = 43,977,207,036,034,624/139,804,940
6. Step 6: Final answer
   x = 314,561,181.00