Finding the Third Proportional to 42,145.94 and 90,303.45

Step by Step Solution

1. Step 1: Write the proportion equation
   42,145.94 : 90,303.45 = 90,303.45 : x
2. Step 2: Convert to fraction form
   42,145.94/90,303.45 = 90,303.45/x
3. Step 3: Cross multiply
   42,145.94x = 90,303.45 × 90,303.45
4. Step 4: Simplify right side
   42,145.94x = 8,154,713,293.55
5. Step 5: Solve for x
   x = 8,154,713,293.55/42,145.94
6. Step 6: Final answer
   x = 193,487.54