Finding the Third Proportional to 76,428 and 101,931.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,428 : 101,931.50 = 101,931.50 : x
2. Step 2: Convert to fraction form
   76,428/101,931.50 = 101,931.50/x
3. Step 3: Cross multiply
   76,428x = 101,931.50 × 101,931.50
4. Step 4: Simplify right side
   76,428x = 10,390,030,692.25
5. Step 5: Solve for x
   x = 10,390,030,692.25/76,428
6. Step 6: Final answer
   x = 135,945.34