Finding the Third Proportional to 42,143,990 and 91,945,351

Step by Step Solution

1. Step 1: Write the proportion equation
   42,143,990 : 91,945,351 = 91,945,351 : x
2. Step 2: Convert to fraction form
   42,143,990/91,945,351 = 91,945,351/x
3. Step 3: Cross multiply
   42,143,990x = 91,945,351 × 91,945,351
4. Step 4: Simplify right side
   42,143,990x = 8,453,947,570,513,201
5. Step 5: Solve for x
   x = 8,453,947,570,513,201/42,143,990
6. Step 6: Final answer
   x = 200,596,753.43