Finding the Third Proportional to 42,571,158 and 64,919,457

Step by Step Solution

1. Step 1: Write the proportion equation
   42,571,158 : 64,919,457 = 64,919,457 : x
2. Step 2: Convert to fraction form
   42,571,158/64,919,457 = 64,919,457/x
3. Step 3: Cross multiply
   42,571,158x = 64,919,457 × 64,919,457
4. Step 4: Simplify right side
   42,571,158x = 4,214,535,897,174,849
5. Step 5: Solve for x
   x = 4,214,535,897,174,849/42,571,158
6. Step 6: Final answer
   x = 98,999,794.58