Finding the Third Proportional to 403,827,653.50 and 878,409,617.50

Step by Step Solution

1. Step 1: Write the proportion equation
   403,827,653.50 : 878,409,617.50 = 878,409,617.50 : x
2. Step 2: Convert to fraction form
   403,827,653.50/878,409,617.50 = 878,409,617.50/x
3. Step 3: Cross multiply
   403,827,653.50x = 878,409,617.50 × 878,409,617.50
4. Step 4: Simplify right side
   403,827,653.50x = 771,603,456,116,496,256
5. Step 5: Solve for x
   x = 771,603,456,116,496,256/403,827,653.50
6. Step 6: Final answer
   x = 1,910,724,660.46