Finding the Third Proportional to 5,121,192 and 7,929,117

Step by Step Solution

1. Step 1: Write the proportion equation
   5,121,192 : 7,929,117 = 7,929,117 : x
2. Step 2: Convert to fraction form
   5,121,192/7,929,117 = 7,929,117/x
3. Step 3: Cross multiply
   5,121,192x = 7,929,117 × 7,929,117
4. Step 4: Simplify right side
   5,121,192x = 62,870,896,399,689
5. Step 5: Solve for x
   x = 62,870,896,399,689/5,121,192
6. Step 6: Final answer
   x = 12,276,613.80