Finding the Third Proportional to 307,822,870.69 and 677,209,710.38

Step by Step Solution

1. Step 1: Write the proportion equation
   307,822,870.69 : 677,209,710.38 = 677,209,710.38 : x
2. Step 2: Convert to fraction form
   307,822,870.69/677,209,710.38 = 677,209,710.38/x
3. Step 3: Cross multiply
   307,822,870.69x = 677,209,710.38 × 677,209,710.38
4. Step 4: Simplify right side
   307,822,870.69x = 458,612,991,826,191,360
5. Step 5: Solve for x
   x = 458,612,991,826,191,360/307,822,870.69
6. Step 6: Final answer
   x = 1,489,860,031.52