Finding the Third Proportional to 42,416,822.25 and 64,857,942

Step by Step Solution

1. Step 1: Write the proportion equation
   42,416,822.25 : 64,857,942 = 64,857,942 : x
2. Step 2: Convert to fraction form
   42,416,822.25/64,857,942 = 64,857,942/x
3. Step 3: Cross multiply
   42,416,822.25x = 64,857,942 × 64,857,942
4. Step 4: Simplify right side
   42,416,822.25x = 4,206,552,640,475,364
5. Step 5: Solve for x
   x = 4,206,552,640,475,364/42,416,822.25
6. Step 6: Final answer
   x = 99,171,800.65