Finding the Third Proportional to 9,290,480 and 12,837,720

Step by Step Solution

1. Step 1: Write the proportion equation
   9,290,480 : 12,837,720 = 12,837,720 : x
2. Step 2: Convert to fraction form
   9,290,480/12,837,720 = 12,837,720/x
3. Step 3: Cross multiply
   9,290,480x = 12,837,720 × 12,837,720
4. Step 4: Simplify right side
   9,290,480x = 164,807,054,798,400
5. Step 5: Solve for x
   x = 164,807,054,798,400/9,290,480
6. Step 6: Final answer
   x = 17,739,347.68