Finding the Third Proportional to 42,748,575 and 86,686,679

Step by Step Solution

1. Step 1: Write the proportion equation
   42,748,575 : 86,686,679 = 86,686,679 : x
2. Step 2: Convert to fraction form
   42,748,575/86,686,679 = 86,686,679/x
3. Step 3: Cross multiply
   42,748,575x = 86,686,679 × 86,686,679
4. Step 4: Simplify right side
   42,748,575x = 7,514,580,316,049,041
5. Step 5: Solve for x
   x = 7,514,580,316,049,041/42,748,575
6. Step 6: Final answer
   x = 175,785,516.03