Finding the Third Proportional to 30,641.63 and 64,381.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,641.63 : 64,381.50 = 64,381.50 : x
2. Step 2: Convert to fraction form
   30,641.63/64,381.50 = 64,381.50/x
3. Step 3: Cross multiply
   30,641.63x = 64,381.50 × 64,381.50
4. Step 4: Simplify right side
   30,641.63x = 4,144,977,542.25
5. Step 5: Solve for x
   x = 4,144,977,542.25/30,641.63
6. Step 6: Final answer
   x = 135,272.77