Finding the Third Proportional to 42,571,164 and 64,919,466

Step by Step Solution

1. Step 1: Write the proportion equation
   42,571,164 : 64,919,466 = 64,919,466 : x
2. Step 2: Convert to fraction form
   42,571,164/64,919,466 = 64,919,466/x
3. Step 3: Cross multiply
   42,571,164x = 64,919,466 × 64,919,466
4. Step 4: Simplify right side
   42,571,164x = 4,214,537,065,725,156
5. Step 5: Solve for x
   x = 4,214,537,065,725,156/42,571,164
6. Step 6: Final answer
   x = 98,999,808.08