Finding the Third Proportional to 30,319.31 and 45,900.42

Step by Step Solution

1. Step 1: Write the proportion equation
   30,319.31 : 45,900.42 = 45,900.42 : x
2. Step 2: Convert to fraction form
   30,319.31/45,900.42 = 45,900.42/x
3. Step 3: Cross multiply
   30,319.31x = 45,900.42 × 45,900.42
4. Step 4: Simplify right side
   30,319.31x = 2,106,848,728.30
5. Step 5: Solve for x
   x = 2,106,848,728.30/30,319.31
6. Step 6: Final answer
   x = 69,488.67