Finding the Third Proportional to 86,177,452.50 and 128,960,848.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,177,452.50 : 128,960,848.50 = 128,960,848.50 : x
2. Step 2: Convert to fraction form
   86,177,452.50/128,960,848.50 = 128,960,848.50/x
3. Step 3: Cross multiply
   86,177,452.50x = 128,960,848.50 × 128,960,848.50
4. Step 4: Simplify right side
   86,177,452.50x = 16,630,900,445,839,952
5. Step 5: Solve for x
   x = 16,630,900,445,839,952/86,177,452.50
6. Step 6: Final answer
   x = 192,984,359.17