Finding the Third Proportional to 16,688,076.75 and 34,655,139

Step by Step Solution

1. Step 1: Write the proportion equation
   16,688,076.75 : 34,655,139 = 34,655,139 : x
2. Step 2: Convert to fraction form
   16,688,076.75/34,655,139 = 34,655,139/x
3. Step 3: Cross multiply
   16,688,076.75x = 34,655,139 × 34,655,139
4. Step 4: Simplify right side
   16,688,076.75x = 1,200,978,659,109,321
5. Step 5: Solve for x
   x = 1,200,978,659,109,321/16,688,076.75
6. Step 6: Final answer
   x = 71,966,271.31