Finding the Third Proportional to 42,051.38 and 64,390.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,051.38 : 64,390.50 = 64,390.50 : x
2. Step 2: Convert to fraction form
   42,051.38/64,390.50 = 64,390.50/x
3. Step 3: Cross multiply
   42,051.38x = 64,390.50 × 64,390.50
4. Step 4: Simplify right side
   42,051.38x = 4,146,136,490.25
5. Step 5: Solve for x
   x = 4,146,136,490.25/42,051.38
6. Step 6: Final answer
   x = 98,596.93