Finding the Third Proportional to 28,499.81 and 42,590.06

Step by Step Solution

1. Step 1: Write the proportion equation
   28,499.81 : 42,590.06 = 42,590.06 : x
2. Step 2: Convert to fraction form
   28,499.81/42,590.06 = 42,590.06/x
3. Step 3: Cross multiply
   28,499.81x = 42,590.06 × 42,590.06
4. Step 4: Simplify right side
   28,499.81x = 1,813,913,423.75
5. Step 5: Solve for x
   x = 1,813,913,423.75/28,499.81
6. Step 6: Final answer
   x = 63,646.50