Finding the Third Proportional to 70,666.50 and 99,037.50

Step by Step Solution

1. Step 1: Write the proportion equation
   70,666.50 : 99,037.50 = 99,037.50 : x
2. Step 2: Convert to fraction form
   70,666.50/99,037.50 = 99,037.50/x
3. Step 3: Cross multiply
   70,666.50x = 99,037.50 × 99,037.50
4. Step 4: Simplify right side
   70,666.50x = 9,808,426,406.25
5. Step 5: Solve for x
   x = 9,808,426,406.25/70,666.50
6. Step 6: Final answer
   x = 138,798.81