Finding the Third Proportional to 42,978.09 and 91,492.03

Step by Step Solution

1. Step 1: Write the proportion equation
   42,978.09 : 91,492.03 = 91,492.03 : x
2. Step 2: Convert to fraction form
   42,978.09/91,492.03 = 91,492.03/x
3. Step 3: Cross multiply
   42,978.09x = 91,492.03 × 91,492.03
4. Step 4: Simplify right side
   42,978.09x = 8,370,791,782.25
5. Step 5: Solve for x
   x = 8,370,791,782.25/42,978.09
6. Step 6: Final answer
   x = 194,768.80