Finding the Third Proportional to 70,487.50 and 109,312.50

Step by Step Solution

1. Step 1: Write the proportion equation
   70,487.50 : 109,312.50 = 109,312.50 : x
2. Step 2: Convert to fraction form
   70,487.50/109,312.50 = 109,312.50/x
3. Step 3: Cross multiply
   70,487.50x = 109,312.50 × 109,312.50
4. Step 4: Simplify right side
   70,487.50x = 11,949,222,656.25
5. Step 5: Solve for x
   x = 11,949,222,656.25/70,487.50
6. Step 6: Final answer
   x = 169,522.58