Finding the Third Proportional to 34,688.25 and 70,672.50

Step by Step Solution

1. Step 1: Write the proportion equation
   34,688.25 : 70,672.50 = 70,672.50 : x
2. Step 2: Convert to fraction form
   34,688.25/70,672.50 = 70,672.50/x
3. Step 3: Cross multiply
   34,688.25x = 70,672.50 × 70,672.50
4. Step 4: Simplify right side
   34,688.25x = 4,994,602,256.25
5. Step 5: Solve for x
   x = 4,994,602,256.25/34,688.25
6. Step 6: Final answer
   x = 143,985.42