Finding the Third Proportional to 12,929,779 and 19,359,055.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,929,779 : 19,359,055.50 = 19,359,055.50 : x
2. Step 2: Convert to fraction form
   12,929,779/19,359,055.50 = 19,359,055.50/x
3. Step 3: Cross multiply
   12,929,779x = 19,359,055.50 × 19,359,055.50
4. Step 4: Simplify right side
   12,929,779x = 374,773,029,852,080.25
5. Step 5: Solve for x
   x = 374,773,029,852,080.25/12,929,779
6. Step 6: Final answer
   x = 28,985,261.84