Finding the Third Proportional to 45,415.69 and 70,492.78

Step by Step Solution

1. Step 1: Write the proportion equation
   45,415.69 : 70,492.78 = 70,492.78 : x
2. Step 2: Convert to fraction form
   45,415.69/70,492.78 = 70,492.78/x
3. Step 3: Cross multiply
   45,415.69x = 70,492.78 × 70,492.78
4. Step 4: Simplify right side
   45,415.69x = 4,969,232,208.36
5. Step 5: Solve for x
   x = 4,969,232,208.36/45,415.69
6. Step 6: Final answer
   x = 109,416.65