Finding the Third Proportional to 86,474,405.25 and 188,905,162.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,474,405.25 : 188,905,162.50 = 188,905,162.50 : x
2. Step 2: Convert to fraction form
   86,474,405.25/188,905,162.50 = 188,905,162.50/x
3. Step 3: Cross multiply
   86,474,405.25x = 188,905,162.50 × 188,905,162.50
4. Step 4: Simplify right side
   86,474,405.25x = 35,685,160,419,151,408
5. Step 5: Solve for x
   x = 35,685,160,419,151,408/86,474,405.25
6. Step 6: Final answer
   x = 412,667,312.55