Finding the Third Proportional to 64,476 and 99,631.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,476 : 99,631.50 = 99,631.50 : x
2. Step 2: Convert to fraction form
   64,476/99,631.50 = 99,631.50/x
3. Step 3: Cross multiply
   64,476x = 99,631.50 × 99,631.50
4. Step 4: Simplify right side
   64,476x = 9,926,435,792.25
5. Step 5: Solve for x
   x = 9,926,435,792.25/64,476
6. Step 6: Final answer
   x = 153,955.52