Finding the Third Proportional to 21,692,634 and 28,789,340

Step by Step Solution

1. Step 1: Write the proportion equation
   21,692,634 : 28,789,340 = 28,789,340 : x
2. Step 2: Convert to fraction form
   21,692,634/28,789,340 = 28,789,340/x
3. Step 3: Cross multiply
   21,692,634x = 28,789,340 × 28,789,340
4. Step 4: Simplify right side
   21,692,634x = 828,826,097,635,600
5. Step 5: Solve for x
   x = 828,826,097,635,600/21,692,634
6. Step 6: Final answer
   x = 38,207,720.54