Finding the Third Proportional to 69,503.06 and 142,279.88

Step by Step Solution

1. Step 1: Write the proportion equation
   69,503.06 : 142,279.88 = 142,279.88 : x
2. Step 2: Convert to fraction form
   69,503.06/142,279.88 = 142,279.88/x
3. Step 3: Cross multiply
   69,503.06x = 142,279.88 × 142,279.88
4. Step 4: Simplify right side
   69,503.06x = 20,243,562,830.02
5. Step 5: Solve for x
   x = 20,243,562,830.02/69,503.06
6. Step 6: Final answer
   x = 291,261.45