Finding the Third Proportional to 446,856,966 and 697,442,521.50

Step by Step Solution

1. Step 1: Write the proportion equation
   446,856,966 : 697,442,521.50 = 697,442,521.50 : x
2. Step 2: Convert to fraction form
   446,856,966/697,442,521.50 = 697,442,521.50/x
3. Step 3: Cross multiply
   446,856,966x = 697,442,521.50 × 697,442,521.50
4. Step 4: Simplify right side
   446,856,966x = 486,426,070,796,277,952
5. Step 5: Solve for x
   x = 486,426,070,796,277,952/446,856,966
6. Step 6: Final answer
   x = 1,088,549,821.99