Finding the Third Proportional to 405,054 and 872,437.50

Step by Step Solution

1. Step 1: Write the proportion equation
   405,054 : 872,437.50 = 872,437.50 : x
2. Step 2: Convert to fraction form
   405,054/872,437.50 = 872,437.50/x
3. Step 3: Cross multiply
   405,054x = 872,437.50 × 872,437.50
4. Step 4: Simplify right side
   405,054x = 761,147,191,406.25
5. Step 5: Solve for x
   x = 761,147,191,406.25/405,054
6. Step 6: Final answer
   x = 1,879,125.23