Finding the Third Proportional to 64,466,961.75 and 139,143,150

Step by Step Solution

1. Step 1: Write the proportion equation
   64,466,961.75 : 139,143,150 = 139,143,150 : x
2. Step 2: Convert to fraction form
   64,466,961.75/139,143,150 = 139,143,150/x
3. Step 3: Cross multiply
   64,466,961.75x = 139,143,150 × 139,143,150
4. Step 4: Simplify right side
   64,466,961.75x = 19,360,816,191,922,500
5. Step 5: Solve for x
   x = 19,360,816,191,922,500/64,466,961.75
6. Step 6: Final answer
   x = 300,321,523.87