Finding the Third Proportional to 70,716 and 148,702.50

Step by Step Solution

1. Step 1: Write the proportion equation
   70,716 : 148,702.50 = 148,702.50 : x
2. Step 2: Convert to fraction form
   70,716/148,702.50 = 148,702.50/x
3. Step 3: Cross multiply
   70,716x = 148,702.50 × 148,702.50
4. Step 4: Simplify right side
   70,716x = 22,112,433,506.25
5. Step 5: Solve for x
   x = 22,112,433,506.25/70,716
6. Step 6: Final answer
   x = 312,693.50